A few of us where I used to work used to get together once a week after work and quilt...each of us working on different projects. Since we didn't go home first and were there through dinner time, we would bring snacks that we could munch on while sewing. Things such as pretzels, fresh vegies and dip, or fruit can be eaten without getting our hands greasy or stained (no potato chips, Doritos, or Cheetos for example), and make minimal mess even if accidentally spilled. And of course as already mentioned, drink bottles with lids.
Donna